Air Tightness Test

At Coltraco, we provide a great range of air-tightness testing equipment, including the Portascanner® and Portascanner® Airtight. We’re proud of the quality, reliability, and accuracy of our UK-built instruments, all adhering to UK building regulations. Our air leakage detection systems use ultrasound to undertake air tightness tests of any room or compartment, with the capability to locate leak sites as small as 0.5mm in diameter.

This air-tightness test equipment utilises ultrasound for a recognised non-destructive testing method to determine airtight integrity by helping you locate specific leak sites.

Portascanner® AIRTIGHT is our most advanced ultrasonic room integrity testing tool, contributing to unrivalled airtightness. Portascanner® AIRTIGHT locates and quantifies even the smallest of leaks and can perform data analysis to present these results as indications of a room’s airtightness. This allows for quick testing with extreme precision for applications in the construction, maintenance, or medical fields.

P/N: 509004-AT


The Portascanner® is an ultrasonic room integrity testing tool, allowing you to locate even minor leak sites quickly, easily, and non-destructively. The perfect tool for ensuring and maintaining airtight integrity.

  • Type – Ultrasonic Room Integrity Tester
  • Function – To test the airtightness of sealed compartments/rooms
  • Part Number – 509004-520
  • NSN – 6625-99-257-8336
  • IMPA – 652778
  • Application – Used for detecting leaks in Energy Efficient Buildings, Construction, Passive House, Computer Rooms, Telecommunication Centres, Data Centres, Laboratories, Clean Rooms, Control Rooms, Manufacturing, Robotics, Storage

Why Choose Ultrasonic Air Tightness Testing?

Unlike standard air testing, which typically includes costly, time-consuming practices, an air tightness test with our equipment is fast, accurate, and non-invasive. Our air tightness tests are done in just a few minutes with practically no impact on the normal operation of your facilities.

Visual inspections alone cannot be relied upon to detect leaks. This is why we recommend you undergo air tightness and leakage testing. Many air leakage paths can be too small to see with a visual inspection or can take convoluted paths through the structure. Both of these options make it difficult to spot air-tightness issues.

Our Portascanner® range gives you confidence that you have identified and located all the leak sites in your structure, even those under half a millimetre diameter. This attention to detail makes it the perfect tool for air testing and getting precise results.

How Does Air Pressure Testing Work?

An air tightness test uses the reflection and absorption of sound waves to detect air leaks in any structure. By detecting how these waves reflect off a surface, our machines can identify leaks as small as half a millimetre in diameter.

This air leakage testing equipment comprises an ultrasound generator and a receiver unit. The generator is placed on one side of a structure and switched on, filling the room or compartment with ultrasound. The receiver is then deployed on the structure’s other side to scan for leaks.

The precise location of the leak site can be determined by identifying the point in the seal with the maximum readings. Furthermore, the reflection and diffraction of the sound wave as it passes through the leak are affected by the size and shape of the leak, so information about these properties can be interpreted by the receiver. This helps prevent uncontrolled air leakage.

Why Is It Important?

Fire Safety

Fire safety systems for server rooms, data centres, and high-value assets typically use gaseous fire suppression systems, including CO2, Inergen®, FM200®, and NOVEC™ 1230. These clean systems stop fires without damaging assets and rely on air tightness for maximum efficiency. If the room containing the asset has unwanted air leakage, there may not be enough pressure difference to extinguish fires fully. Regular air permeability testing ensures that you have airtight building areas as required.

Improving Indoor Air Quality

Indoor air quality has been a concern for some time, especially in the wake of the COVID-19 pandemic. While solutions such as HEPA filters and ultraviolet filtration systems have had a positive effect, they’re only as effective as the building’s overall ventilation. Air tightness testing is required to achieve optimum air quality. You can achieve perfectly balanced internal and external pressure by focusing on external doors, windows, and other hotspots.

Reducing Energy Usage

When heating or cooling a building, airtightness and ventilation are crucial to combat poor energy efficiency. If a building is not sufficiently airtight, even with insulation, temperature control will be considerably less efficient with increased heating bills.

This has two major implications: an increased carbon footprint and increased operating costs for your building as per building regulations. These consequences are why it’s so important to undergo air tightness testing.

Advantages of Using Ultrasonic Testing

An air tightness test using Coltraco’s industry-leading equipment is non-invasive, highly accurate, and fast. However, typical air tightness tests are much more intrusive, often requiring the room or area to be evacuated before and during the air test. Air pressure testing can also be expensive; if your room fails this test, it must be fixed and retested until it passes.

Ultrasonic tightness detection is non-destructive and can be done quickly, with almost no disruption to normal operation. It provides a clear diagnosis of any issues on the same day. This allows you to carry out an independent air tightness testing scheme and find and deal with repairs ahead of the pressurisation test, so you can be sure you will pass the first time without uncontrolled air flow.

Furthermore, pressurisation tests only provide information on the overall leakage rates in the room/compartment, and not on where these leaks are occurring. Our ultrasonic leak detectors enable you to easily identify, locate and even quantify individual leak sites, such as gaps and cracks, so you can target any remedial work in the areas most needed, improving the efficiency and effectiveness of building control.

Air Tightness Test Case Study – Oxygen Reduction System, UK

Oxygen Reduction System had a UK server room with a floor area of approximately 91m2. The room was tested with the Portascanner® ultrasonic room integrity tester and points with high readings were noted. This test identified all the main sources of air leakage in the room, allowing targeted maintenance work to be carried out. After maintenance, assuming no further changes are made to the room, this room will retain its airtight integrity. Therefore, alongside the required, periodic checks of the room, the Portascanner® gives a high level of confidence that the room will comply with and exceed current ISO 14520 regulations and other building regulations through our blower door testing equipment.